Google Sandbox
 

The Google Sandbox is an algorithmic filter designed by Google and implemented around March 2004 with the purpose of weeding out spam sites by placing all new websites under quarantine for a period of assessment. Although the Google sandbox was designed with the primary aim of targeting spam sites, in reality it affects all new websites. The general consensus in seo (search engine optimization) circles is that the Google sandbox algorithm functions to prevent new sites from blasting their way to the top of Google (using whatever means possible) and in effect overtaking quality websites that have been around for years.